Monolayer graphene is widely used in electronics due to its exceptional electrical conductivity, mechanical strength, and transparency. It serves as a key material in the development of high-performance transistors, flexible displays, touchscreens, and solar cells. Its high surface area and strength make it ideal for use in sensors, particularly for detecting gases and biomolecules with high sensitivity, as well as in biosensors. In energy storage, graphene is utilized in supercapacitors and batteries to enhance charge capacity and reduce charging times. It is also incorporated into composite materials to improve strength and durability. In medicine, graphene is studied for drug delivery, biosensors, and tissue engineering. Additionally, its thermal conductivity properties are leveraged in thermal management applications for electronic devices, improving heat dissipation and performance, and its thinness and flexibility make it suitable for wearable electronics.